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G. A. ROESSLER. GONTROLLING- APPARATUS POP PPPD PUMPS.

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UNITED STATES PATENT OFFICE.

GEORGE A. ROESSLER, OF TEGAL, JAVA.

CONTROLLING APPARATUS FOR FEED-PUMPS.

SPECIFICATION forming part of Letters Patent No. 464,733, dated December8, 1891.

Application tiled June 13, 1891` n To ttZZ whom it may concern:

Be it known that I, GEORGE A. RoEssLER, residing at Tegal, in J ava, anda subject of the German Emperor, have invented certain new anduseful'Impi-ovements in Controlling Apparatus for Feed-Pumps, of whichthe following is a specification.

This invention relates to improvements in feed-pumps for the supply ofwater to steamboilers and for other purposes.

The object of my invention is to provide improved means for controllingthe supply of water in a simple and thoroughly reliable manner.

The invention consists in the various features of improvement more fullypointed out in the claim.

In the accompanying drawings, Figure 1 is a vertical section of myimproved feed-pum p,

partly in side view, showing t-he valve closed. Fig. 2 is a similar Viewwith the valve open; Fig. 3, a horizontal section on line x 0c, Fig. 1;and Fig. 4, a vertical transverse section through box h.

Into the water-supply pipe or conduitI introduce a short pipe a, towhich a casing b is laterally secured. Within the casing b a lever c,pivoted to a plate CZ, is arranged, normally resting on the horizontalbottom of the casing b, as shown in Fig. 1. The free end of lever cextends into the short pipe a, inside of which saidlever carries a diskor circular plate c', corresponding in area to the area of across-section of the interior of the pipe a. The plate cZ, together withthe lever, is introduced into the casing b through an aperture orscrew-socket, into which fits the screw-plug e, having a projectingscrew-pin e', which -engages a ltapped hole of the plate CZ to hold thesame in position. When the feed-pump of the boiler is working, thewater, which flows through the conduit or pipe, also passes the shortpipe a, thereby lifting the disk c', and accordingly the lever c, towhich said disk is secured. The raised position is shown in Fig.

'2, andin this position the lever c and disk c remain as long as theregular liow ot' water continues through the pipe. Connected to saidlever c is the lower end of a rod f, which passes up through astuffing-box g into a suitable casing h, where said rod is connected toa small lever z', arranged to turn on a pivot k. As soon as the levercgis lifted by the passing water the lever i will be rocked on its pivot7e. A toothed segment Z, forming part of or secured to the lever t' byengaging a pinion m, will now turn the axis of a finger or pointer m',which moves over a dial placed in front of the casing h. It will beeasily understood that following the position ot' the lever c and disk cthe finger will vary its position on the dial. The raised position ofthe lever, Fig. 2,

causes the finger to keep a determined position vas there areYirregularities .in the supply or working order of the pump the flow ofwater through pipe a will also be irregular and the lever c, owing tothe varying pressure acting on the disk c', will begin to oscillate orvibrate, whereby the same variations will be transmitted to the linger.The attendant Will thus at once observe thatthere are irregularities inthe working of the feed, and he may regulate the same in proper mannerand in good time.

The combination of pipe a with casing l), a lever c, pivoted therein andcarrying disk c', and with rod f, lever t', segment Z, pinion Im, andpointer m', substantially as specified.

In testimony whereof I. hereunto sign my name, in the presence' of twosubscribing witnesses, this 3d day of March, 1891.

G. A. ROESSLER.

Witnesses:

D. J. PAETELLO, CARL SOHMIEDING.

